乙酸改性活性炭纤维对SO_(2)吸附性能的研究  

Study on Adsorption Properties of Acid Modified Activated Carbon Fiber for SO_(2)After Soaking in Acetic

作　　者：罗涛朋 LUO Taopeng(College of Chemistry and Food Science,Nanchang Normal University,Nanchang 330032,China)

机构地区：[1]南昌师范学院化学与食品科学学院,江西南昌330032

出　　处：《河南科技》2023年第18期75-78,共4页Henan Science and Technology

基　　金：江西省教育厅科研项目(GJJ2202025、GJJ2202026);南昌师范学院校级科研项目(22XJZR01、22XJZR03)。

摘　　要：【目的】通过温和的改性手段,提升活性炭纤维(ACF)对SO_(2)的吸附能力,制备一种低成本、绿色环保的吸附材料。【方法】以ACF为前驱体,采用不同体积分数乙酸浸泡和不同时长200℃热处理进行改性,并测试了改性后的活性炭纤维材料对SO_(2)的吸附能力,初步探究了改性机理。【结果】ACF经200℃高温处理后,碳纤维出现裂纹,表面更加粗糙,使材料比表面积增加,提升了对SO_(2)的吸附能力,其中热处理3 h的结果最佳。乙酸溶解浸泡改性后,会增加材料表面的酸性含氧官能团,提升材料对SO_(2)的吸附性能,通过不同体积分数乙酸处理,探究得出体积分数4%的乙酸溶液处理过的ACF脱硫效率最高。【结论】本研究方法相较于传统改性方法更加温和、环保,为活性炭纤维的改性研究提供参考。[Purposes]The adsorption capacity of activated carbon fiber(ACF)for SO_(2) was enhanced through mild modification techniques,resulting in the preparation of a cost-effective and environmen⁃tally friendly adsorbent material.[Methods]The precursor ACF was subjected to a 200℃heat treatment and soaked in varying concentrations of acetic acid.The adsorption capacity of modified activated carbon fiber material for SO_(2) was tested,and the reaction mechanism was preliminarily explored.[Findings]The results revealed that after treated at 200℃,the carbon fibers exhibited cracks and a rougher surface,thereby increasing the specific surface area of the material and enhancing its adsorption capacity for SO_(2).Heat treatment for 3 hours yielded optimal outcomes.After acetic acid dissolution soaking modification,the acidic oxygen-containing functional groups on the surface of the material will be increased,which can improved the adsorption performance of the material for SO_(2).Experimental results indicated that ACF treated with a 4%acetic acid solution exhibited the highest desulfurization efficiency.[Conclu⁃sions]The aforementioned method is more gentle and environmentally friendly compared to the tradi⁃tional modification approach,thereby offering a valuable reference for activated carbon fiber modifica⁃tion.

关 键 词：活性炭纤维 浸泡改性 吸附 

分 类 号：TQ342.742[化学工程—化纤工业]